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    <a href="../index.html">cppreference.com</a> &gt; <a href=
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    empty
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  <div class="syntax-name-format">
    Syntax:
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  <pre class="syntax-box">
  #include &lt;queue&gt;
  bool empty() const;
</pre>

  <p>The empty() function returns true if the queue has no elements,
  false otherwise.</p>

  <p>For example, the following code uses empty() as the stopping
  condition on a <a href= "../keywords/while.html">while</a> loop to
  clear a queue while displaying its contents:</p>

  <pre class="example-code">
 queue&lt;int&gt; q;
 for( int i = 0; i &lt; 5; i++ ) {
   q.push(i);
 }
 while( !q.empty() ) {
   cout &lt;&lt; q.front() &lt;&lt; endl;
   q.pop();
 }              
</pre>

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